CN205210229U - Cable short to ground lookes up appearance - Google Patents
Cable short to ground lookes up appearance Download PDFInfo
- Publication number
- CN205210229U CN205210229U CN201520884349.6U CN201520884349U CN205210229U CN 205210229 U CN205210229 U CN 205210229U CN 201520884349 U CN201520884349 U CN 201520884349U CN 205210229 U CN205210229 U CN 205210229U
- Authority
- CN
- China
- Prior art keywords
- cable
- audio frequency
- short
- output terminal
- voice receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Locating Faults (AREA)
Abstract
The utility model discloses the conducting wire short circuit inspection field of consumer is specifically said to a cable short to ground lookes up appearance. Be in including audio frequency transmitter and voice receiver be used for connecting two wires at the cable on two output terminal of audio frequency transmitter, connect the earphone on the output of voice receiver, the audio frequency transmitter includes audio frequency oscillator and the audio amplifier who is connected with audio frequency oscillator's output, and the wire of two short circuits is connected with audio amplifier's output. The utility model discloses the electromagnetic induction principle is utilized, the short -circuit fault point that the inside short position of cable is difficult to the discovery can be seeked fast. The small convenient to carry of instrument who adopts is not limited by light.
Description
Technical field
The test for short-circuit field, conducting wire of the utility model consumer, particularly searches instrument for a kind of cable short circuit grounding.
Background technology
Cable in use extrudes through moisture, by its mine solar exposure wind and weather in the open, equipment moving stretching etc. all can cause cable inner lead insulation resistance to reduce, so just make to cause short circuit phenomenon between cable inner lead, but be do not see the electrician of short position in appearance, be difficult to again find trouble location.Such cable fault is wasted time and energy very much and is difficult to looking up the fault point.
As follows with 1/2nd intercept method lookup methods for cable internal short-circuit lookup method in the past: if there is the cable of 100 meters long to find that there is short circuit phenomenon, will block at 50 meters of, test sees short circuit phenomenon is on which limit respectively, judging short dot is at which side cable to there being one side cable of short circuit phenomenon to carry out 1/2nd place's intercept methods measurements, by that analogy search short dot, Here it is 1/2nd intercept methods.This method error is large, and waste cable material, truncation points is many.Cable fault hidden danger is just many.
A kind of method is also had to be estimate the position of cable internal short-circuit with resistance, this method will know the conductive section of cable, the material of cable and conductance, cable internal short-circuit position is being estimated by calculating by the resistance value of electric bridge instrument measurement short circuit cable, this method error is large, impracticable, need high-accuracy bridge instrument simultaneously.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of cable short circuit grounding to search instrument, solve the joint having erroneous judgement by mistake to block in search procedure, also need to recover wire, improve maintenance cost greatly, also the serviceable life of whole piece cable can greatly have been damaged, for enterprise causes unnecessary waste.
The utility model realizes like this, a kind of cable short circuit grounding searches instrument, comprise audio transmitter and voice receiver, for being connected to two wires of cable on two lead-out terminals of described audio transmitter, frames connecting with headphone on the output terminal of described voice receiver, the note amplifier that described audio transmitter comprises audio frequency oscillator and is connected with the output terminal of audio frequency oscillator, the wire of two short circuits is connected with the output terminal of note amplifier.
Further, the signal amplifier that described voice receiver comprises audio frequency receiving coil and is connected with the output terminal of audio frequency receiving coil, the output terminal frames connecting with headphone of described signal amplifier.
Further, the receiving end of described audio frequency receiving coil is set to arc structure.
Further, described audio transmitter is connected with adopting spring wire between voice receiver.
Compared with prior art, beneficial effect is the utility model: the utility model utilizes electromagnetic induction principle, can the indiscoverable short circuit trouble point in fast finding cable internal short-circuit position.The instrument volume adopted is little easy to carry, does not limit by light.Night on daytime can use, and adopt and search instrument and search cable short circuit trouble point, error is minimum, during as cable short-circuit resistance 0 ohm, its error is 1 centimetre, avoids the phenomenon of by mistake blocking when can search cable internal fault, thus realizes having saved servicing time, save cable material, also extend cable service time simultaneously.
Accompanying drawing explanation
Fig. 1 is the structured flowchart that the utility model searches instrument;
The module frame chart of the audio transmitter that Fig. 2 provides for the utility model embodiment;
The module frame chart of the voice receiver that Fig. 3 provides for the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
See Fig. 1 composition graphs 2 and Fig. 3, a kind of cable short circuit grounding searches instrument, comprise audio transmitter 1 and voice receiver 2, for being connected to two wires of cable on two lead-out terminals of described audio transmitter 1, frames connecting with headphone 3 on the output terminal of voice receiver 2, the note amplifier that audio transmitter 1 comprises audio frequency oscillator and is connected with the output terminal of audio frequency oscillator, the wire of two short circuits is connected with the output terminal of note amplifier, and note amplifier and audio frequency oscillator pass through Power supply.
The signal amplifier that voice receiver 2 comprises audio frequency receiving coil and is connected with the output terminal of audio frequency receiving coil, the output terminal frames connecting with headphone of signal amplifier, audio frequency receiving coil and signal amplifier pass through Power supply.
In order to make the more smooth and easy of slip, being set to circular arc, adopting spring between audio transmitter and voice receiver at the receiving end 5 of audio frequency receiving coil, 4 connect, and prevent the separation of two parts after a procedure.
The course of work is:
1) at measurement failure cable, measured failure cable and consumer are disconnected and power supply disconnection; Mustn't banded cable electrical measurement.
2) first with multimeter, two minimum wires of short-circuit resistance in cable are found out to cable measurement;
3) adopt audio transmitter, two of audio transmitter output terminals are connected on respectively on the very little line of two short-circuit resistances of cable, open the power switch of audio transmitter;
4) adopt voice receiver to turn on the power switch, connect earphone 3 at the output terminal of voice receiver, voice receiver is contacted cable sheath G from audio transmitter machine end, move searching toward cable tail end;
5) when hearing the point of crossing having sound signal from earphone, this point of crossing is exactly cable short circuit trouble point K.
The wire of two short circuits forms closed-loop path, and produce sound signal in closed-loop path, the receiving end of voice receiver moves generation in the closed circuit and accepts sound signal.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a cable short circuit grounding searches instrument, it is characterized in that, comprise audio transmitter and voice receiver on two lead-out terminals of described audio transmitter for being connected to two wires of cable, frames connecting with headphone on the output terminal of described voice receiver, the note amplifier that described audio transmitter comprises audio frequency oscillator and is connected with the output terminal of audio frequency oscillator, the wire of two short circuits is connected with the output terminal of note amplifier.
2. search instrument according to cable short circuit grounding according to claim 1, it is characterized in that, the signal amplifier that described voice receiver comprises audio frequency receiving coil and is connected with the output terminal of audio frequency receiving coil, the output terminal frames connecting with headphone of described signal amplifier.
3. search instrument according to cable short circuit grounding according to claim 2, it is characterized in that, the receiving end of described audio frequency receiving coil is set to arc structure.
4. search instrument according to cable short circuit grounding according to claim 1, it is characterized in that, described audio transmitter is connected with adopting spring wire between voice receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520884349.6U CN205210229U (en) | 2015-11-06 | 2015-11-06 | Cable short to ground lookes up appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520884349.6U CN205210229U (en) | 2015-11-06 | 2015-11-06 | Cable short to ground lookes up appearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205210229U true CN205210229U (en) | 2016-05-04 |
Family
ID=55847938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520884349.6U Expired - Fee Related CN205210229U (en) | 2015-11-06 | 2015-11-06 | Cable short to ground lookes up appearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205210229U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541390A (en) * | 2018-09-21 | 2019-03-29 | 沪东中华造船(集团)有限公司 | A kind of detection method of cable failure |
| CN110940891A (en) * | 2019-12-13 | 2020-03-31 | 西安锐驰电器有限公司 | Cable fault detection system and detection method |
-
2015
- 2015-11-06 CN CN201520884349.6U patent/CN205210229U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541390A (en) * | 2018-09-21 | 2019-03-29 | 沪东中华造船(集团)有限公司 | A kind of detection method of cable failure |
| CN109541390B (en) * | 2018-09-21 | 2021-02-02 | 沪东中华造船(集团)有限公司 | Cable breakage detection method |
| CN110940891A (en) * | 2019-12-13 | 2020-03-31 | 西安锐驰电器有限公司 | Cable fault detection system and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103245880B (en) | Utilize the low current grounding localization method of line equivalent parameter recognition principle | |
| CN204088784U (en) | A kind of embedded electric cable accessories with temperature and electric current on-line monitoring function | |
| CN103235237A (en) | High-voltage direct-current grounding electrode line high-resistance fault positioning method | |
| CN201724999U (en) | Multicore cable fault point querier | |
| CN201522541U (en) | Transformer substation electrical equipment on-line monitoring system | |
| CN205484653U (en) | Net route selection device is joined in marriage in resistance disturbance | |
| CN103344884A (en) | Electricity overhead line fault two-frequency-signal detecting positioning method and dedicated position indicator thereof | |
| CN205210229U (en) | Cable short to ground lookes up appearance | |
| CN103795029A (en) | Leakage current detection protection circuit of direct-current remote supply power system | |
| CN105353262A (en) | Cable short-circuit grounding search method | |
| CN103592572A (en) | Method for direct current grounding electrode line fault distance measurement through intersecting line positioning of direct current component and harmonic component | |
| CN103698656A (en) | Non-contact earth leakage fault detection method | |
| CN204479671U (en) | A kind of DC converter station direct current arrester electrification detection system | |
| CN201955427U (en) | Low-current ground fault detection indicator | |
| CN103743995A (en) | High-voltage direct current earth electrode line fault location method based on T-type equivalent model | |
| CN204241608U (en) | A kind of leakage current testing cassete | |
| CN202600093U (en) | DC earthing point detector for electrical network line | |
| CN204374348U (en) | A kind of voltage transformer (VT) N600 multipoint earthing testing fixture | |
| CN204789652U (en) | Wire formula test radio frequency connector withstand voltage device | |
| CN204166089U (en) | A kind of partial discharge test circuit | |
| CN203396791U (en) | Integrated shell of cable identification apparatus | |
| CN201788242U (en) | Protection test device of USB equipment | |
| CN105954587B (en) | A kind of harmonics detection circuit and its detection method of distribution system | |
| CN203101499U (en) | Voltage acquisition circuit | |
| CN204758684U (en) | Pocket current indicator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20191106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |